herrernst

herrernst / checkerboard.html

Last active July 5, 2023 20:49

examples to test macOS scaling artifacts

	<!doctype html>
	<style>
	:root {
	background-color: white;
	background-image:
	linear-gradient(45deg, #000 25%, transparent 25%),
	linear-gradient(-45deg, #000 25%, transparent 25%),
	linear-gradient(45deg, transparent 75%, #000 75%),
	linear-gradient(-45deg, transparent 75%, #000 75%);
	background-size:2px 2px;

herrernst / raf.html

Last active August 11, 2023 10:00

requestAnimationFrame fps loop

	<!doctype html>
	<meta name="viewport" content="width=device-width">
	<style>
	:root {
	font-family: sans-serif;
	background: black;
	color: white;
	}
	#frameInfo, #timeInfo, #fps {
	font-size: 5em;

herrernst / zoom-vs-fontsize.html

Last active February 13, 2025 13:00

Browser zoom vs font-size

	<!doctype html>
	<html>
	<head>
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<style>
	:root {
	font-family: sans-serif;
	-webkit-text-size-adjust: 100%;
	text-size-adjust: 100%; /* needed for chrome to not increase some text and some not (in flexbox) */
	}

herrernst / is-direct-link-interface.c

Created March 26, 2025 16:39

Check if a macOS network interface is a "direct link" interface (what is used for iOS device debugging over USB)

	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <sys/socket.h>
	#include <net/if.h>
	#include <sys/ioctl.h>
	#include <unistd.h>
	#include <sys/errno.h>

	// adopted from https://developer.apple.com/documentation/technotes/tn3158-resolving-xcode-15-device-connection-issues#Update-software-using-packet-filtering-rules